[Strawbale] RE: Strawbale Digest, Vol 18, Issue 13
Rikki Nitzkin
rikkinitzkin at earthlink...
Thu Mar 22 12:10:04 CET 2007
Thanks everyone for taking the time for your answers!
I would greatly appreciate any photos of the construction of round wall
plates.
If they are too big to send to the list, please send me some to my personal
email rikkinitzkin at earthlink...
A picture is worth a thousand words...they say.
Take care,
Rikki Nitzkin
Aulás, Lleida, España
rikkinitzkin at earthlink...
(0034)657 33 51 62
www.casasdepaja.com (Red de Construcción con Balas de Paja)
> -----Mensaje original-----
> De: strawbale-bounces at amper....muni.cz [mailto:strawbale-
> bounces at amper....muni.cz] En nombre de strawbale-
> request at amper....muni.cz
> Enviado el: jueves, 22 de marzo de 2007 12:01
> Para: strawbale at amper....muni.cz
> Asunto: Strawbale Digest, Vol 18, Issue 13
>
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> Today's Topics:
>
> 1. Re: round houses (Rob Tom)
> 2. Re: Re: round houses (Andr? de Bouter)
> 3. Re: Sabion Render Gun (Stewart at TSHargrave....uk)
> 4. Round Wooden Top Plate (Rob Tom)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 20 Mar 2007 19:06:35 -0400
> From: "Rob Tom" <ArchiLogic at yahoo...>
> Subject: [Strawbale] Re: round houses
> To: "European strawbale building discussions"
> <strawbale at amper....muni.cz>
> Message-ID: <op.tpifs9xhffylj4 at edg-d0726062bd2>
> Content-Type: text/plain; format=flowed; delsp=yes;
> charset=iso-8859-15
>
> On Tue, 20 Mar 2007 06:13:16 -0400, Rikki Nitzkin
> <rikkinitzkin at earthlink...> wrote:
>
> > Can anyone send me photos/advice about building round roof/base plates
> > for loadbearing, round SB houses?
>
> Rikki and You're-o-pee'in RoundHeads;
>
> Assuming that you wouldn't try to make a wall-width, monolithic
> cast-in-place concrete beam that would be nothing more than a massive
> thermal bridge (but would be the easiest to fabricate), box beams using
> laminations of 19mm thick (or similar) lumber (staggering the joints from
> one lamination to the next, as well as offsetting the joints in the web
> material and adding shear plates at those joints) to construct the cords
> would be a good choice-- "good" in the sense that box beams would consume
> a minimum of lumber while providing the necessary strength and insulative
> properties consistent with the SB walls on which they sit.
>
> The sizing of the chords and webs would need to be determined for the
> specific loading conditions.
>
> If bending/laminating 19mm thick lumber into curves is deemed to be too
> challenging, then making the beam an octagon (or similar polygon) would do
> the trick but wouldn't be a continuous (and hence stronger) beam as in the
> case of the former.
>
> The joints would be re-inforced most easily with the use of steel bands at
> the outer face to provide the tension to resist outward thrust (assuming
> no centre pole or collar ties) and sheet steel or sheet lumber gussets
> across both faces of the joints to resist shear.
>
>
> === * ===
> Rob Tom
> Kanata, Ontario, Canada
> <A r c h i L o g i c at c h a f f y a h o o dot c a >
> winnow the chaff from my edress in your reply
> --
> === * ===
> Rob Tom
> Kanata, Ontario, Canada
> <A r c h i L o g i c at c h a f f y a h o o dot c a >
> winnow the chaff from my edress in your reply
>
>
>
>
> ------------------------------
>
> Message: 2
> Date: Wed, 21 Mar 2007 14:14:22 +0100
> From: Andr? de Bouter <forum at lamaisonenpaille...>
> Subject: Re: [Strawbale] Re: round houses
> To: European strawbale building discussions
> <strawbale at amper....muni.cz>
> Message-ID: <46012FAE.9050709 at lamaisonenpaille...>
> Content-Type: text/plain; charset=ISO-8859-15; format=flowed
>
> Hello Rikki,
>
> Rob Tom said ....If bending/laminating 19mm thick lumber into curves is
> deemed to be too challenging, then making the beam an octagon (or
> similar polygon) would do the trick but wouldn't be a continuous (and
> hence stronger) beam as in the case of the former....
>
> One way of making the fabrication of the curved ring beam easier is to
> make it on the foundation before the bales go up. That way you have the
> exact curve and something solid to work with to keep your planks in
> place before all is glued/hamered/bolted in place. You then place the
> ringbeam aside (in pieces if it is a very big and heavy beam) so the
> wall can be raised).
>
> Bye,
>
> André
>
>
> Rob Tom a écrit :
> > On Tue, 20 Mar 2007 06:13:16 -0400, Rikki Nitzkin
> > <rikkinitzkin at earthlink...> wrote:
> >
> >> Can anyone send me photos/advice about building round roof/base
> >> plates for loadbearing, round SB houses?
> >
> > Rikki and You're-o-pee'in RoundHeads;
> >
> > Assuming that you wouldn't try to make a wall-width, monolithic
> > cast-in-place concrete beam that would be nothing more than a massive
> > thermal bridge (but would be the easiest to fabricate), box beams
> > using laminations of 19mm thick (or similar) lumber (staggering the
> > joints from one lamination to the next, as well as offsetting the
> > joints in the web material and adding shear plates at those joints) to
> > construct the cords would be a good choice-- "good" in the sense that
> > box beams would consume a minimum of lumber while providing the
> > necessary strength and insulative properties consistent with the SB
> > walls on which they sit.
> >
> > The sizing of the chords and webs would need to be determined for the
> > specific loading conditions.
> >
> > If bending/laminating 19mm thick lumber into curves is deemed to be
> > too challenging, then making the beam an octagon (or similar polygon)
> > would do the trick but wouldn't be a continuous (and hence stronger)
> > beam as in the case of the former.
> >
> > The joints would be re-inforced most easily with the use of steel
> > bands at the outer face to provide the tension to resist outward
> > thrust (assuming no centre pole or collar ties) and sheet steel or
> > sheet lumber gussets across both faces of the joints to resist shear.
> >
> >
> > === * ===
> > Rob Tom
> > Kanata, Ontario, Canada
> > <A r c h i L o g i c at c h a f f y a h o o dot c a >
> > winnow the chaff from my edress in your reply
> > --=== * ===
> > Rob Tom
> > Kanata, Ontario, Canada
> > <A r c h i L o g i c at c h a f f y a h o o dot c a >
> > winnow the chaff from my edress in your reply
> >
> >
> > ____________________________________________________
> > European strawbale building discussion list
> >
> > Send all messages to:
> > Strawbale at amper....muni.cz
> >
> > Archives, subscription options, etc:
> > http://amper.ped.muni.cz/mailman/listinfo/strawbale
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> >
> >
> >
> >
>
>
>
> ------------------------------
>
> Message: 3
> Date: Wed, 21 Mar 2007 18:41:22 -0000
> From: Stewart at TSHargrave....uk
> Subject: Re: [Strawbale] Sabion Render Gun
> To: European strawbale building discussions
> <strawbale at amper....muni.cz>
> Message-ID: <46017C52.10376.3B05C5 at Stewart...TSHargrave.me.uk>
> Content-Type: text/plain; charset=US-ASCII
>
> On 20 Mar 2007 at 12:00, Chug. wrote:
>
> > if you want info on Torolessa then I got mine from Nolan Sheid
>
> Is it a success, Chug? I remember you asking about that a while ago. Does
> it do a
> good job?
>
> Having now helped out on several jobs where lime render was applied by
> hand, I find
> it quite a pleasing job - very satisfying and tactile. Not sure the
> Torolessa could match
> that, and with three or four people helping, you can get a surprising
> amount done in a
> day.
>
> --
> Stewart H.
>
>
>
> ------------------------------
>
> Message: 4
> Date: Wed, 21 Mar 2007 17:15:58 -0400
> From: "Rob Tom" <ArchiLogic at yahoo...>
> Subject: [Strawbale] Round Wooden Top Plate
> To: SB <Strawbale at amper....muni.cz> (Europe)
> Message-ID: <op.tpj5cwkdffylj4 at edg-d0726062bd2>
> Content-Type: text/plain; format=flowed; delsp=yes;
> charset=iso-8859-15
>
> A round building would (should) have constant radii of curvatures so that
> 2.4 m long curve template for the inner and outer radii can be used to
> set up/check the proper curvature at any point of the foundation, SB walls
> or top plate.
>
> With conventional buildings (ie wood, masonry) a curvature template cut
> from a piece of plywood is typically used .
>
> In the case of a SB wall, where a box beam is often used for the top
> plate, the curvature template/bending jig (for bending the 19mm thick cord
> lamiations) would simply be the "waste" portion of the OSB or plywood from
> which the curved webs of the box beam are cut.
>
> Some triangular brackets made of short stubs of 38 x 64 or 38 x 89 mm
> lumber + scraps of ply or OSB can be attached to the curvature template at
> points along the edge, say 600mm apart, against which the 19mm lumber can
> pulled/bent, using woodworkers clamps.
>
> The process would be to butter the faces of the lumber to be laminated
> with glue, then clamp them against the bending jig and then drive in a few
> screws (inexpensive drywall screws are fine) to hold the laminations
> together until the glue sets, freeing up the clamps to be used on the next
> section.
>
> --
> === * ===
> Rob Tom
> Kanata, Ontario, Canada
> <A r c h i L o g i c at c h a f f y a h o o dot c a >
> winnow the chaff from my edress in your reply
>
>
>
>
> ------------------------------
>
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> End of Strawbale Digest, Vol 18, Issue 13
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